please let me know
How to Find When the User Last Logged into the Database?
please let me know how to check this information with the command.
Enable auditing.
Then audit connects - very easy command
audit connect
Docs Link Here
Then do some connects.
Then query sys.dba_audit_session -
SELECT
username,
timestamp
FROM
sys.dba_audit_session
WHERE
username = 'HR' -- the user you care about
AND action_name = 'LOGON'
ORDER BY
timestamp DESC
FETCH FIRST 1 ROWS ONLY -- in 11g or older just also say where rownum < 2
Try this:
select username, machine, to_char(logon_time,'HH:MM:SS')
from v$session
where username='SYS' <-- username
Related
im in needed of help, im doing some exercises with a a oracle database and do not know how to do this:
I have a table called users that have information of the users that connect to the DB, what i want is a procedure where to show the information of a specific row where the connected user is compared to the user in the table.
i do not how to compared a data in a table to the connected user, more like i dont know how "work" or what limitations have the "user" parameter to be implemented this way
Sorry if my petition its a little confusing english is not my main language.
EX: i have a user in the table users, that have a serial id, username,password,name, surname1 and surname2 and i want the procedure to show me the information of this user in particular, but i do want that if for example im connected with "pedro" user to the db this procedure show me the info about the user pedro and if i change the user connected to another like Paul the information of the select change to Paul.
One option might be to use the USER function.
SQL> connect scott/tiger#orcl
Connected.
SQL> select user from dual;
USER
------------------------------
SCOTT
SQL>
Therefore you'd
select serial id,
username,
password,
name,
surname1,
surname2
from users
where username = user;
You can find the currently connected user with
select sys_context('USERENV','CURRENT_USER') from dual;
Is there a way to find all user accounts in Oracle which have been created by me?
The SELECT * FROM ALL_USERS; returns all users in Oracle, but there seems to be no way of defining the 'owner' of the account (ORC_SYS would be nice) so I can add a clause like
'WHERE OWNER !+ 'ORC_SYS' or something.
Thanks in advance
KS
If its only the users created by oracle at install time you want to exclude you can properly do it filtering on user_id. Normally these users will have the lowest numbers:
Ajust the 35 to your installation.
Select * from dba_users where user_id > 35;
And if you are running 12c or above there is a column "Oracle_maintained" telling you if it is an oracle created user.
Select * from dba_users where oracle_maintained = 'N';
If you have access to dba_users and your Oracle's version is 12.1 and above, you can filter by oracle_maintained column.
Otherwise, there is no "official" way to distinguish between oracle internal users and your own.
There are some indirect ways, though:
Filter by all_users.created column. Mostly, internal users are created when the database is created, so your users will be after this date. You may find the database creation time in v$database.created .
Filter by all_users.user_id. As above, mostly, internal users are created when the database is created, so they get low user_id. There are some exceptions for several users like SYSBACKUP, SYSDG.
Both ways may produce incorrect results when internal users are created much later than the database creation - for example when an Oracle Option is reinstalled.
Should you try:
SELECT * FROM dba_users;
while installing sap on 3 tiered architecture, I need to install database instance (oracle) and central instance(sap) and two different machines.
after completing database install and proceeding with central instance installation, the setup is trying to access a table and fails with following error
SELECT USERID, PASSWD FROM
SAPUSER WHERE USERID IN (:A0, :A1)
OCI-call failed with
-1=OCI_ERROR SQL error 942: 'ORA-00942: table or view does not exist'
*** ERROR => ORA-942 when
accessing table SAPUSER
so I checked and found out that two cases are possible
Table does not exist or
User has no access rights to this Table
next I checked for table, and found an entry in dba_tables,
SQL> select owner from dba_tables where table_name='SAPUSER';
OWNER
------------------------------
OPS$E64ADM
but when trying to fetch data from it using select query
SQL> select * from SAPUSER;
select * from SAPUSER
*
ERROR at line 1:
ORA-00942: table or view does not exist
now I am confused, whether the table is available or not. what is the reason for this and how can it be resolved?
It depends on where you are accesing the object from,
check to see which user you are logged in as
SQL> SHOW USER
This will show which user you are logged in as,
if you are in OPS$E64ADM, the directly query using
SQL> select * from SAPUSER;
if show user show anyother user you need privilege to access it from other users, can ask dba or if you have access then run,
SQL> grant select on OPS$E64ADM.SAPUSER to username; -- the username from which you want to access the table;
then, you can acces from the other user , using,
SQL> select * from OPS$E64ADM.SAPUSER
who are you signed in as? unless it's the owner of the table you will need to change your code to include the owner ie.
select * from OPS$E64ADM.SAPUSER
SELECT object_id from dbname.tablename
This query has to be executed against oracle 11g.I get errors when i execute this.
I do a migration from sybase to oracle and in oracle this query fails.
What could be the problem. Please suggest a solution
"What could be the problem."
All sorts of things. Since you failed to state what errors you're getting, we can only guess, e.g.:
Table not found
No SELECT privilege on table
dbname not a valid schema
object_id not a column in the table
Not connected to a running oracle instance
Trying to run the statement in an environment that doesn't understand SQL
etc, etc, ...
If all you want is to check that the table exists, you could do this:
SELECT 1 FROM dba_tables WHERE owner = 'DBNAME' AND table_name = 'TABLENAME';
If you want to check that you can query the table, you could do this:
SELECT 1 FROM schemaname.tablename WHERE 1=0;
If you want to check if the table has any rows, you could do this:
SELECT 1 FROM schemaname.tablename WHERE ROWNUM <= 1;
What you will do with the result. If you only want a unique id for a row, yo can user SELECT ROWID FROM dbname.tablename!
I want to be able to list all of the users in a given database along with an icon that determines whether they are locked or not. The problem I'm having is querying the "locked" status for a given user, I though it might have been on all_users but it isn't. Can anyone point me in the right direction?
Found it!
SELECT username,
account_status
FROM dba_users;
select username,
account_status
from dba_users
where lock_date is not null;
This will actually give you the list of locked users.
This suits the requirement:
select username, account_status, EXPIRY_DATE from dba_users where
username='<username>';
Output:
USERNAME ACCOUNT_STATUS EXPIRY_DA
--------------------------------------------------------------------------------
SYSTEM EXPIRED 13-NOV-17